 |
поискавой системы для электроныых деталей |
|
|
поискавой системы для электроныых деталей |
|
LTC3554 датащи(PDF) 4 Page - Linear Technology |
|
|
|||||||||||||||||||||||||||||
LTC3554 датащи(HTML) 4 Page - Linear Technology |
|
|
4 / 36 page  LTC3554 4 3554f SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS BVIN Input Supply Voltage (Note 9) l 2.7 5.5 V VOUT UVLO VOUT Falling VOUT Rising BVIN Connected to VOUT Through Low Impedance. VOUT UVLO Disables the Switching Regulators. 2.5 2.6 2.8 2.9 V V fOSC Oscillator Frequency FSEL High FSEL Low 1.91 0.955 2.25 1.125 2.59 1.295 MHz MHz IFB1 IFB2 FB1 Input Current (Note 8) FB2 Input Current (Note 8) –0.05 –0.05 0.05 0.05 μA μA RSW1_PD RSW2_PD SW1 Pull-Down in Shutdown SW2 Pull-Down in Shutdown PWR_ON1 = 0V PWR_ON2 = 0V 10 10 kΩ kΩ Logic Input Pins (FSEL, STBY) Input High Voltage 1.2 V Input Low Voltage 0.4 V Input Current –1 1 μA Switching Regulator 1 in Normal Operation (STBY Low) ILIM1 Peak PMOS Current Limit PWR_ON1 = 3.8V (Note 7) 300 450 600 mA VFB1 Regulated Feedback Voltage PWR_ON1 = 3.8V l 780 800 820 mV D1 Max Duty Cycle 100 % RP1 RDS(ON) of PMOS ISW1 = 100mA 1.1 Ω RN1 RDS(ON) of NMOS ISW1 = –100mA 0.7 Ω Switching Regulator 1 in Standby Mode (STBY High) VFB1_LOW Feedback Voltage Threshold PWR_ON1 = 3.8V, VFB1 Falling l 770 800 820 mV ISHORT1_SB Short-Circuit Current 10 21 50 mA VDROP1_SB Standby Mode Dropout Voltage PWR_ON1 = 2.9V, ISW1 = 5mA, VFB1 = 0.77V, VOUT = 2.9V, BVIN = 2.9V 25 60 mV Switching Regulator 2 in Normal Operation (STBY Low) ILIM2 Peak PMOS Current Limit PWR_ON2 = 3.8V (Note 7) 300 450 600 mA VFB2 Regulated Feedback Voltage PWR_ON2 = 3.8V l 780 800 820 mV D2 Max Duty Cycle 100 % RP2 RDS(ON) of PMOS ISW2 = 100mA 1.1 Ω RN2 RDS(ON) of NMOS ISW2 = –100mA 0.7 Ω Switching Regulator 2 in Standby Mode (STBY High) VFB2_LOW Feedback Voltage Threshold PWR_ON2 = 3.8V, VFB2 Falling l 770 800 820 mV ISHORT2_SB Short-Circuit Current 10 21 50 mA VDROP2_SB Standby Mode Dropout Voltage PWR_ON2 = 2.9V, ISW2 = 5mA, VFB2 = 0.77V, VOUT = 2.9V, BVIN = 2.9V 25 60 mV SWITCHING REGULATOR ELECTRICAL CHARACTERISTICS The l denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VOUT = BVIN = 3.8V, PWR_ON1 = PWR_ON2 = 0V, unless otherwise noted. |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Russian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
